Steam-generator.



PATENTED FEB. l1, 1908.

H DEL MAR STEAM GENERATOR. APPLICATION PI'LBD MARJM, 1907.'

rm: Nunn/s 9:15a: ca, wasunvarou. o. c

STEAM GENERATOR. APBLIUATION FILED 111.11.14, 1907.

A NORA/EY PATBNTBD 11113.11, 190s. l H. DBL 1v1-AR.

2 SHEETS-SHEET 2.

4 UNITED sTATEs PATENT oEErcE.

HARRY DEL MAR, OF NEW YORK, N. Y., ASSIGNOR TO BOILERS AND `ENGINEERINGCOM- PANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

To all 'whom it may concern:

STEAM-GENERATOR.

Specification of Letters Patent.

Patented Feb. 11, 1908.

Be it known that I, HARRY DEL MAR, of the city, county, and State of NewYork, have invented a new and useful Im rovement in Steam-Generators,`of which t ie following is a full, clear, and exact description.

My invention relates to improvements in steam generators, and the objectof my invention is to produce a steam generator which combines theelements of a fire tube and water tube boiler, and which utilizes the`products of combustion so that the heat does not 'have a direct passagethrough the fire tube series, but is deflected and given such a coursethat the heat is practically all absorbed by the water in the boiler andtubes before the smoke enters the stack.`

Another object 'of my invention is to produceva sectional boiler of thekind described, with the sections arranged sol that large power can betaken into a fire room in small sections,l and assembled by connectingthe several elements or drums by means of water tubes or water legs, andthe whole set in position in suitable frames, each element having aframe ofits own, and the several frames can be joined together to formthe side walls of the boiler, thus having a boiler with a setting whichwill stand the effects of expansion and contraction without displacingthe setting, and giving longer life to the boiler.

In carrying out this idea, I can make the boiler of either lhorizontalor vertical type, and the essential thing is to havethe several elementsor drums through which the fire tubes pass, connected by other elementsor drums through which water tubes pass, the fire tubes of the firstelements entering the drums of the second elements, and the water legsor tubes connecting the iirst mentioned drums. All this to the end thatI can get a compact, relatively cheap, and economical steam generator,which will occupy relatively small 'space'.

With these ends in view, my invention consists of certain features ofconstruction vand combinations of parts which will be ing drawingsforming part of this specification, in which similar figures and lettersof reference indicate corresponding parts in all the views.

Figure 1 is a longitudinal section of the horizontal boiler showing myimprovements. Fig..2 is a cross section on the line 2.2 of Fig. 1. Fig.3 is a cross section on the line 3.3 of Fig. 1. Fig. 4 is a crosssection on the line 4.4 of Fi 1,7 Fig. 5 is a cross section on the line5.5 of Fig. 1, Fig. 6 is a vertical section of the boiler, Fig. 7 is across section on the line 7.7 of Fig. 6, and Fig. 8 is a detailelevation showing a modied form of connection between a pair of drums.

Referring to Figs. 1 to 5, it will be seen that the boiler is made up ofa series of drums 10, 1()a and 10b, which are spaced apart, and theseveral elements or drums connected by intermediate drums, 11 and 11a;Obviously this arrangement can be carried out indefinitely, that is, anydesired number of drums within reasonable limits, can be used, and Iprefer to arrange them as shown, with the successive drums lower thanthepreceding 1 any usual setting, and I have shown it ar-` ranged over agrate 12, which can be of any preferred kind, and which is shownarranged in front of the ordinary bridge wall 13. The course of theproducts of combustion is therefore back over the bridge wall 13, thenceup behind the boiler and forward through the fire tubes 14, which extendthrough the drum 10b. II-ere the products of combustion enter the drum11a, and are deflected, and the heat is absorbed to a further extent bythe water which passes through the water tubes 15, which connect thepartslOf'i and 10b. From the drum 11"1L the products of combustion passforward through theV fire tubes 16 in the drum 10a, and enter the drum11, where they are deflected, the heat is absorbed by the water in thesecond series of waterltubes 15, and the ases then pass forward throu hthe ire tu es 17 in the drum 10, to the c amber 18, and the smoke thenpasses out through the smoke stack 19. It

will be seen that by this time the water in the boiler has prettythoroughly absorbed the heat from the products-of combustion.

, Arranged above the boiler proper is a steam drum 20, which also servesas an equalizer, and I prefer to use at least two of these drums, sothat the boiler can be set up in sections to better advantage, and thetwo sections connect by the coupling 21. The sections 20 of the steamdrum also connect with the parts 10, 10a and 10b, by water legs 22, andin order that the water may thoroughly absorb the heat from the gases, Iprefer to have the water line in the lower part of the steam drumsections, as indicated by broken lines in Fig. 1. l

In making up the drums 11 and 11a', the top part of the drum can be madeof iron, as shown best in Fig. 3, and this covered with a fire brick 23,land this top part of the drum can conveniently have flanges 25, whichrest on the brick supports 24. The lower part of the drum can beconveniently made of iirebrick 26, but I do not claim the drum structurein detail, and on the other hand do not limit my invention to anyparticular form of drum.

It will be readily seen that the drums 10, 10L and 10b, or 11 and 11,can be made up in any convenient way, but it is essential that theyseveral drums be separable so that the boiler can be taken into thefire room in sections, and built up as shown. The several l'drums shouldbe provided with suitable manholes, so that they can be entered, and itis better to make the drum 10il a little longer than the parts 11 or11a, so that one can enter the latter, cut out the tubes if necessary,and remove the tubes 16 through the drum 11 or 11a.

-By 'reference to the drawing itwill be seen that I arrange the watertubes 15 near the periphery of the drums, but the arrangement of theseveral tubesI is not material, and I do not limit myself to the use ofthese water tubes, as the connection between the parts 1:0, 10a and 10hcan be any suitable water connection. This is shown clearly in Fig. 8and will be referred to hereinafter.

In Fi's. 6 to 8 it will be observed that I can pro uce a vertical boilerof the same type with practically no change, and it amounts in fact tosetting the boiler shown in Fig. 1, on end. Some s ight modificationsare, however, necessary. For instance, in this case the boiler isinclosed by a suitable shell 27, and the several drums 10, 10'nl and 10Dare connected by an equalizer 28, which connects directly with the drumsby suitable pipes 29.

Several of the drums can be supported on suitable brackets 30 attachedto the boiler casing, or they can be supported in any other convenientway. The casing merges in the stack 31, in which I have shown a suitabledamper 32, and in the vertical type of boilerv of course the steam drum2O is dispensed with, but the steam can be taken oii throuv h the pipe10C connecting with the top of t e section 10b. Y In this verticalboiler the drum 10 is relatively short, and the gases pass upwardthrough lues or tubes 34 in the drum, and the drum is provided with ablow-off pipe. The drum 11 has vertical water tubes 35 connecting theparts 10 and 10, while iire tubes 36 extend through the drum 10a andinto the drum 11a, and this has water tubes 37 connecting the drum 10awith the drum 10b, while re tubes 38 extend through the latter. In thiscase, as in the structure shown in Fig. 1, it will be seen that the retubes and water tubes or connections, alternate, and so the water in thedrum iirst absorbs the heat from the fire tubes, while the water in thewater tubes next absorbs the heat from the drums, through which theypass, and in this way the heat is fully utilized.

To illustrate the fact that other connec* tions can be used instead ofwater tubes 35 and 15, I show in Fig. 8 the drums 10 and 10u Y nected bywater tubes and separated by come bustion chambers, and iire -fluesextending through the several water containing shells, the said fire`flues in each section being out oi alinement with the iire iiues of thenext section.

2. A boiler of the kind described havin a f plurality of watercontaining shells with e iiues therethrough, with the iire lues ofadjacent shells out of alinement each shell being on a different planefrom the one next to it, and with the rear shell the lowest, to providefor settlin at this point, and water tubes connecting t e severalshells.

3. A boiler of the kind described, having a plurality of shells, withthe 'lire box and combustion chamber under the shell series, each shellhaving a series of fire flues approximately iilling one-half the shell,with the tube series arranged alternately so as to direct the gases ofcombustion in an indirect course through the different tube series.

4. Aboiler of the kind described, having a plurality of shells with aiire box and comarranged alternately so as to direct the gases a seriesof lire lues approximately filling one-half the shell, With thetubeseries arranged alternately so as to direct the gases of combustion inan indirect course through the several tube series, and Water tubesconnecting the several shells.

HARRY DEL MAR.

bustion chamber under the shell series, each I shellhavin a series ofireflues approximately l filling onealf the shell, With the tube series1 l of combustion in an indirect course through the different tubeseries, combustion chambers separating the several shells7 and Watertubes connecting the shells and leading through the combustion chambers.

5. A steam generator comprisinr a series of Water containing shells7each shell having Witnesses:

W. B. HUTCHINSON, FRANK L. STUBBs.

